kitio.aiLangSmith vs Traceloop
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. LangSmith starts at $39/mo and Traceloop starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Agent tracing
- Datasets and evaluators
- Prompt hub
- Agent deployment
- Online monitoring
- One-line instrumentation
- Built-in quality checks
- Drift monitoring
- Evaluation dashboard
- CI/CD integration
| Feature | LangSmith | Traceloop |
|---|---|---|
| Best for | Tracing, evaluation and deployment platform for LLM agents | Monitoring and evaluation platform for LLM applications |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $39/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | LangChain | Traceloop |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
LangSmith starts at $39/mo and Traceloop starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Developer
Free
- 1 seat
- 5k base traces / month, then pay as you go
- Community support
Plus
$39/mo
- Per seat
- 10k base traces / month, then pay as you go
- Access to Deployment and Engine
- Unlimited seats
Enterprise
Custom
- Self-hosted and hybrid deployment
- Custom SSO, ABAC and RBAC
- Support SLA
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
LangSmith
- Detailed agent traces
- Strong LangGraph integration
- Works with any framework
- Per-seat pricing adds up
- Trace retention costs extra
- Self-hosting is enterprise-only
Traceloop
- Free tier includes 50K spans a month
- Quick setup with one line of code
- Ready-made faithfulness and safety checks
- Free tier keeps data for only 24 hours
- Paid tiers not listed on the pricing page
- Future direction tied to ServiceNow deal
Which one should you choose?
Choose LangSmith if you want:
- Detailed agent traces
- Strong LangGraph integration
- Works with any framework
Watch out: per-seat pricing adds up.
Choose Traceloop if you want:
- Free tier includes 50K spans a month
- Quick setup with one line of code
- Ready-made faithfulness and safety checks
Watch out: free tier keeps data for only 24 hours.
LangSmith vs Traceloop FAQ
What is the difference between LangSmith and Traceloop?
LangSmith: Tracing, evaluation and deployment platform for LLM agents. Traceloop: Monitoring and evaluation platform for LLM applications. Both are models & apis tools.
Is LangSmith or Traceloop cheaper?
LangSmith starts at $39/mo and Traceloop starts at See pricing page. Check both pricing pages for current plans.
Do LangSmith and Traceloop have free plans?
LangSmith: Yes. Traceloop: Yes.
Who makes LangSmith?
LangSmith is made by LangChain, based in United States.
Who makes Traceloop?
Traceloop is made by Traceloop.
Which should I choose, LangSmith or Traceloop?
Choose LangSmith if you value detailed agent traces and strong langgraph integration. Choose Traceloop if you value free tier includes 50k spans a month and quick setup with one line of code.